Scaffold



Ju y y H. B. GAFFERS.

SCAFFOLD Filed August 18, 1924 avweutozi IEIE IIEFC :iIIEsH J M XMM/ mm? Patented July 13, 1926.

UNITED .sTf

TEs PATENT OFFER RMAN B. GAFFERS, or. WATERVLIET, New YORK.

'scAFFoLD.

\ Application filed August 18, 1924. Serial No; 732,867.;v

This inventionrelates to improvements in scaliolds andmorev particularly to an =imvantages thereof, andfthe particular con struction, combinatlon and arrangement of.

parts comprisingothe same, will be under-.

7 stood from the .following detailed" description, when considered in connection with the accompanying drawing, forming part hereof, and illustrating one embodiment of the invention.

In the drawing:

Figure 1 is an end elevation of one of the end supports of a trestle equipped with adjustable legs in accordance with the present invention. i

'Fig. 1 is .a detail section on the line 1- of Figure 1. V

Fig. 2 is a detail side elevation, on an enlarged-scale, of one of the adjustable legs.

Fig. 3 is a detail 'front elevation of the adjustable leg construction illustrated in Figure 2.

- Fig. 4 is a detail longitudinal section of the construction illustrated in Figure 2, and

Fig. 5 is a transverse section on the line 5-5 of Figure 4. I Y

The invention comprehends an adjustable leg construction including a pair of slidably related wooden leg sections, one of said section-s having a metal member secured thereto and provided with a series of notches with which cooperates a locking device mounted on the other leg section to hold the leg sections in difierent positions of adjustment rel atively to each other. More particularly the invention contemplates a metal rack member in the form of a fiat metal strip seated in a groove in one of the legsections, and bolts or equivalent means extending transversely v of and piercing the leg section and the metal strip member, and securing the parts together.

While a specific embodiment of the invention is illustrated in the drawings, it will of course be understood that changes and variations in theparticular construction shown and the embodiment of the invention in other forms with various scafiolding structures, trestles, ladders and the like,as .will appeal to those skilled in the art and falling within; the scope of the appended claims, may be practiced withoutdeparting from the spirit of the invention.

In the particular embod ment of the vention illustrated in the drawings, the same is shown as applied to a trestle structure, oneend support of the-trestle being shown, by way of example, the same comprising pairsof slidably related upper and lower leg sections 1-4-2. :3 designates a transverse tie member connecting the upper leg sections 1,, and 4 pairs of pins located on the trans-- verse tie .memberBin spaced relation with thelower endportions of the upperleg sections 1 and serving to maintain the lower leg sections 2 in position adjacent the inner faces of the upper leg sections.

'In accordance with the presentinvention each of the upper leg sections 1 is provided with a metal rack'member in the form of a fiat metal strip 5 seated in a groove 6 in the leg section, and secured thereto by bolts and nuts 7--8, or equivalent means, the bolts 7 extending transversely of and piercing the leg sections 1 and the metal strip member 5, see particularly Figure 5 of the drawings, the parts being assembled by inserting the flat metal stripmember 5 edgewise into the groove 6, theninserting the bolts 7 through suitable apertures provided in the-leg sections 1 and the metal strip 5,, and tightly turning up the-nuts 8 on the bolts 7. The groove 6-which is located centrally of the edge taces, of the leg section, is relatively deep and the metal strip member 5, which is provided with a series of notches 5 is of a width, as shown, so that when seated in the groove 6, the same extends well into the le section with its'series of notches or notclie part projecting outwardly from the face thereof. The metal stripmember 5 is 'con- 100 structed of steel or other suitable metal.

On each lower leg section 2 is alocking device adapted to cooperate with the seriesv of notches 5 of the metal strip member 5 tolock the leg sections in different positions of adjustment. The locking device is shown as a bail 9, said bail having end portions 9 pivotall engaging bearings on brackets 10 secured y screws or other suitable means to the upper portions of the leg sections 2.

It will be noted by the special construction and arrangement of parts hereinbefore described that a. good anchorage for the metal rack member 5 is provided and the same is firmly secured to the leg section, while at the same time the leg section is reinforced by the metal strip member, the resulting structure being of a simple, strong, durable nature and easily assembled.

What I claim is:

1. An adjustable leg construction of the class described, including a pair of slidably related leg sections, one of said leg sections being provided with a groove in one side face thereof intermediate its side edges, a member in the form of a flat metal strip having a series of notches along: one edge thereof, said member being seated in said groove with its notched portion projecting outwardly beyond the face of the leg, and means securing said metal strip member to the leg section including fastening members extending transversely of said leg section into the same and through the metal strip member, in combination with a movable locking device mounted on the other leg section and adapted to cooperate with the series of notches of the metal strip member.

2. An adjustable leg construction of the edges, a member in the form of a fiat metal strip having a series of notches along one edge thereof, said member being seated in said groove with its notched part projecting beyond the face of the leg, and means securing the metal strip member to the leg section, said means comprising bolts extending transversely through the leg section and metal strip member from one side to the other of the leg section, and securing nuts onend portions of the bolts at one side face of the leg section, in combination with a.

movable locking device mounted on the other leg section and adapted to cooperate with the series of notches of the metal strip member.

In testimony whereof I hereunto affix my signature.

HERMAN B. GAFFERS. 

